Assuming you do two 40 hour jobs thats 80 hours a week, its easy to do this for a few months and think this is easy I can do this forever. You might be able to

Assuming you do two 40 hour jobs thats 80 hours a week, its easy to do this for a few months and think this is easy I can do this forever. You might be able to work an 80 hour week consistently but your work may not be as consistent or capable. What happens when some one else on your team makes a mistake which requires you to work over time to make up the difference at which point where do you find the time on top of your 80 hour work week? If you are able to consistently perform at that sort of level you can make more money by finding one job that pays more than two jobs.